WO2020184881A1 - Procédé de fabrication de lentille à haute réfraction polarisée - Google Patents

Procédé de fabrication de lentille à haute réfraction polarisée Download PDF

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Publication number
WO2020184881A1
WO2020184881A1 PCT/KR2020/002950 KR2020002950W WO2020184881A1 WO 2020184881 A1 WO2020184881 A1 WO 2020184881A1 KR 2020002950 W KR2020002950 W KR 2020002950W WO 2020184881 A1 WO2020184881 A1 WO 2020184881A1
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WO
WIPO (PCT)
Prior art keywords
film
lens
polarizing
polythiourethane
manufacturing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2020/002950
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English (en)
Korean (ko)
Inventor
김충덕
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Onbitt Co Ltd
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Onbitt Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Onbitt Co Ltd filed Critical Onbitt Co Ltd
Priority to CN202080011950.8A priority Critical patent/CN113383254A/zh
Priority to JP2021544336A priority patent/JP7403856B2/ja
Priority to US17/431,811 priority patent/US20220155494A1/en
Publication of WO2020184881A1 publication Critical patent/WO2020184881A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D11/00—Producing optical elements, e.g. lenses or prisms
    • B29D11/00634—Production of filters
    • B29D11/00644—Production of filters polarizing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D11/00—Producing optical elements, e.g. lenses or prisms
    • B29D11/00009—Production of simple or compound lenses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D11/00—Producing optical elements, e.g. lenses or prisms
    • B29D11/00009—Production of simple or compound lenses
    • B29D11/00038—Production of contact lenses
    • B29D11/00125—Auxiliary operations, e.g. removing oxygen from the mould, conveying moulds from a storage to the production line in an inert atmosphere
    • B29D11/00192—Demoulding, e.g. separating lenses from mould halves
    • B29D11/00201—Demoulding, e.g. separating lenses from mould halves using cooling means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D11/00—Producing optical elements, e.g. lenses or prisms
    • B29D11/00009—Production of simple or compound lenses
    • B29D11/00413—Production of simple or compound lenses made by moulding between two mould parts which are not in direct contact with one another, e.g. comprising a seal between or on the edges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D11/00—Producing optical elements, e.g. lenses or prisms
    • B29D11/00009—Production of simple or compound lenses
    • B29D11/00432—Auxiliary operations, e.g. machines for filling the moulds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D11/00—Producing optical elements, e.g. lenses or prisms
    • B29D11/00009—Production of simple or compound lenses
    • B29D11/0048—Moulds for lenses
    • B29D11/00528—Consisting of two mould halves joined by an annular gasket
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D11/00—Producing optical elements, e.g. lenses or prisms
    • B29D11/0073—Optical laminates
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G02B3/0006—Arrays
    • G02B3/0012—Arrays characterised by the manufacturing method
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
    • G02B5/3033—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D11/00—Producing optical elements, e.g. lenses or prisms
    • B29D11/00009—Production of simple or compound lenses
    • B29D11/00365—Production of microlenses
    • B29D11/00375—Production of microlenses by moulding lenses in holes through a substrate
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
    • G02B1/041—Lenses

Definitions

  • the present invention relates to a method of manufacturing a high-refractive polarizing lens, and more particularly, to form a lens by improving the adhesion between a polythiourethane-based resin and a polarizing film attached to the polythiourethane-based resin constituting the high-refractive polarizing lens.
  • the present invention relates to a method of manufacturing a high-refractive polarizing lens capable of improving product stability and reliability without being peeled off from the urethane resin.
  • Polarization here refers to a wave of light that vibrates only in a specific direction through a polarizing film (polarizer) through which natural light, which is difficult to repeat reflection and refraction, is transmitted in only one direction.
  • polarizing film polarizer
  • Such a polarizing lens can reduce glare by blocking reflected light and refracted light at sunrise or sunset, and increases the viewing distance at which objects can be seen.
  • a polarizing film In general polarizing lenses, a polarizing film (polarizer) is attached to the surface of a plastic or glass lens by heating, or a polarizing film is formed into a lens shape in advance, and then a liquid such as CR-39 (allyl diglycol carbonate) or urethane is formed on both sides of the polarizing film. Monomers and oligomers are poured and cured, or a polarizing sheet laminated with a protective film such as a polycarbonate film on both sides of a polarizing film is molded into a lens shape, and then the molded polarizing sheet is inserted into an injection machine. It is manufactured using a method of reinforcing the thickness through injection.
  • a PVA film is attached to both sides of the polythiourethane, and the PVA film is thin and sensitive to moisture.
  • a TAC (Tri Acetyl Cellulose) film has been laminated to a PVA film, and the laminated film has been used by attaching the laminated film to a polythiourethane.
  • the present invention has been devised to solve the above-described problems, and provides a method of manufacturing a high refractive polarizing lens capable of improving product stability and reliability by improving adhesion between a polarizing film and a polythiourethane resin constituting a polarizing lens. It has its purpose in providing.
  • an object of the present invention is to provide a method of manufacturing a highly reliable high refractive polarizing lens in which the polarizing film is not detached even when processing a high refractive polarizing lens by improving the adhesion of a polarizing film to a polythiourethane-based resin.
  • the present invention in order to achieve the above object, the steps of pre-treating both surfaces of the TAC film; Attaching the pre-treated TAC film to both sides of a PVA film to prepare a pre-treated polarizing film; Molding the prepared pre-treated polarizing film into a lens shape; Seating the molded pre-treated polarizing film on a mold for manufacturing a lens; Injecting a polythiourethane-based resin into a mold for manufacturing a lens on which the pretreatment polarizing film is mounted; And fixing the mold and cooling the polythiourethane-based resin. It provides a method of manufacturing a high refractive polarizing lens, comprising:
  • the pretreatment of the TAC film is characterized in that it is made by immersing the TAC film in an aqueous NaOH solution so that the surface is modified by the following formula.
  • the step of attaching the TAC film to the PVA film is characterized in that the pretreated TAC film is attached after applying an adhesive on both sides of the PVA film.
  • the adhesive is characterized in that it consists of a water-based adhesive formed by mixing PVA powder and water.
  • the step of injecting the polythiourethane resin is characterized in that the polythiourethane resin is injected into the upper and lower portions of the pretreated polarizing film.
  • the polythiourethane resin and the pretreated polarizing film are formed of hydrogen bonds to increase adhesion.
  • the method of manufacturing a high-refractive polarizing lens of the present invention improves the adhesion between the lens and the polarizing film by bonding the polarizing film with a polythiourethane-based resin, thereby preventing the film from detaching from the lens at the edge during lens processing. I can.
  • the present invention increases the adhesion of the polarizing film to the lens, there is an advantage in that it is possible to manufacture a lens having a thin and light thickness while having reliability.
  • the present invention has an effect of improving the reliability and stability of the product because the adhesion between the lens and the polarizing film is excellent.
  • FIG. 1 is a cross-sectional view showing a pretreatment of a TAC film according to the present invention.
  • FIG. 2 is a view showing the angle of incidence of the pretreated TAC particles according to the present invention.
  • Figure 3 is a cross-sectional view showing the attachment of the pretreated TAC film according to the present invention to the PVA film.
  • FIG. 4 is a cross-sectional view showing a state in which a polarizing film according to the present invention is manufactured.
  • FIG. 5 is a cross-sectional view showing a state in which the polarizing film according to the present invention is molded into a lens shape.
  • FIG. 6 is a cross-sectional view showing a state in which a polythiourethane-based resin is injected into a mold for manufacturing a lens according to the present invention.
  • FIG. 7 is a cross-sectional view in a state in which the polarizing lens according to the present invention is molded.
  • FIG. 8 is a flowchart showing a manufacturing process of a polarizing lens according to the present invention.
  • FIG. 9 is a cross-sectional view showing a state in which a polythiourethane-based resin is injected vertically into a mold for manufacturing a lens according to the present invention.
  • FIG. 10 is a cross-sectional view of a polarizing lens formed according to the mold of FIG. 9.
  • the best form for the practice of the present invention is the pretreatment of both surfaces of the AC film; Attaching the pre-treated TAC film to both sides of a PVA film to prepare a pre-treated polarizing film; Molding the prepared pre-treated polarizing film into a lens shape; Seating the molded pre-treated polarizing film on a mold for manufacturing a lens; Injecting a polythiourethane-based resin into a mold for manufacturing a lens on which the pretreatment polarizing film is mounted; And fixing the mold and cooling the polythiourethane-based resin.
  • FIG. 1 is a cross-sectional view showing the pretreatment of the TAC film according to the present invention
  • FIG. 2 is a view showing the incident angle of the pretreated TAC particles according to the present invention
  • FIG. 3 is a pretreated TAC film according to the present invention on a PVA film.
  • FIG. 4 is a cross-sectional view showing a state in which a polarizing film according to the present invention is manufactured
  • Figure 5 is a cross-sectional view showing a state in which the polarizing film according to the present invention is molded into a lens shape
  • Figure 6 Is a cross-sectional view showing a state in which a polythiourethane-based resin is injected into a mold for manufacturing a lens according to the present invention
  • FIG. 7 is a cross-sectional view of a polarizing lens according to the present invention
  • FIG. 8 is a A flow chart showing the manufacturing process
  • FIG. 9 is a cross-sectional view showing a state in which a polythiourethane-based resin is injected up and down into a mold for manufacturing a lens according to the present invention
  • FIG. 10 is a state in which a polarizing lens is molded according to the mold of FIG. It is a cross-sectional view.
  • a step (S1) of pre-treating both sides of a triacetyl cellulose (TAC) film of about 0.1 mm is performed.
  • the reason for pre-treating the TAC film 110 is to allow the TAC film 110 to adhere well to a polythiourethane (also referred to as MR lens)-based resin for making a high refractive lens.
  • the pretreatment of the TAC film 110 is to modify the surface of the TAC film 110 by immersing the TAC film 110 in an aqueous NaOH solution.
  • Formula 1 according to the reforming reaction is as follows.
  • hydroxy group (OH -) are formed on the surface. Since the hydroxy group formed on the surface of the TAC film is bonded to the polythiourethane, it is possible to prevent the TAC film from being separated from the polythiourethane resin. To this end, the surface of the TAC film is modified.
  • 2 is a view showing the incidence angle of the pre-treated TAC film particles compared before and after the pre-treatment. As shown in the figure, since the difference in the angle of incidence before and after the pretreatment is large, the incident angle of the pretreated TAC particles is small, and the surface area that can be contacted can be increased, it becomes easier to contact and bond with other materials.
  • the pre-treated TAC film 120 is adhered to both sides of a polyvinyl acetate (PVA) film 110 having a thickness of about 0.03 to 0.05 mm using a water-based adhesive 140 to form a polarizing film 100.
  • PVA polyvinyl acetate
  • the manufacturing process is shown in Figure 3
  • the manufactured polarizing film 100 is shown in Figure 4.
  • the PVA film 130 is attached to the TAC film 120 after the water-based adhesive 140 is applied to the surface.
  • the aqueous adhesive 140 may be prepared by mixing PVA powder and water.
  • the PVA film 130 may be uniaxially stretched by uniaxially stretching a resin film such as polyvinyl alcohol or stabilized with a formant, and then uniaxially stretched, and iodine or a dichroic dye may be used to increase the degree of polarization. ) Can be processed.
  • a resin film such as polyvinyl alcohol or stabilized with a formant
  • iodine or a dichroic dye may be used to increase the degree of polarization.
  • the polarizing film 100 is molded into a lens shape as shown in FIG. 5 (S3).
  • the polarizing film 200 molded into a lens shape is inserted and fixed into the mold 400 for manufacturing a lens (S4).
  • the mold 400 for manufacturing a lens has rubber packings 410 and 420 on both sides, and an injection hole into which a polyurethane is injected is formed in the rubber packing 410 on one side. Between the rubber packings 410 and 420 on both sides, a lens-shaped blocking film 430 is provided at the top and bottom.
  • the blocking film may be made of a material such as glass.
  • the polarizing film 200 is positioned between the blocking films 430 provided up and down between the rubber packings 410 and 420, and an injection space 440 is formed between each blocking film 430 and the polarizing film 200.
  • the polyurethane is injected through the injection hole 411 provided at one side of the mold 400, and the injected polythiourethane is a polarizing film ( A thermosetting agent is mixed and injected into the injection space 440 formed under the 200).
  • the polythiourethane resin 300 is filled in the lower part of the polarizing film 200, the polythiourethane resin 300 and the polarizing film 200 are attached by cooling for a certain period of time. After cooling is completed, the polarizing lens 500 is Manufacturing is completed (S6).
  • Polythiourethane resin 300 is used to manufacture high refractive lenses, and in particular, MR TM lenses (registered trademark of Mitsui Chemicals Co., Ltd.) are a kind of lenses using polythiourethane, and products are being released in series with high refractive index. .
  • MR TM lenses registered trademark of Mitsui Chemicals Co., Ltd.
  • MR-8 has a refractive index of 1.60
  • MR-7 and MR-10 have a refractive index of 1.67
  • MR-174 has a refractive index of 1.74.
  • the larger the refractive index the more suitable for manufacturing thin lenses.
  • the general formula of the polyurethane resin 300 is as follows.
  • hydroxyl (OH -) of the TAC film of formula (1) coupled end of SH and hydrogen of the polythiourethane resin 300 in the formula (2), by hydrogen bonding TAC film polythiourethane It can be strongly attached to the resin 300. Accordingly, the adhesion of the TAC film to the polythiourethane resin may be increased.
  • polythiourethane resin 300 is manufactured to be attached to the upper and lower portions of the polarizing film 200 in a mold for manufacturing a lens.
  • Polythiourethane resin 300 is injected to the top and bottom of the pre-polarizing film 200, a hydroxy group (OH -) of the upper and lower TAC film of the polarizing film 200, a polythiourethane resin (300 of formula (II) ) Is hydrogen bonded to the terminal portion (SH), and the polythiourethane resin 300 may be strongly attached to the TAC film by hydrogen bonding.
  • the present invention improves the adhesion of the polythiourethane resin constituting the high refractive polarizing lens and the polarizing film attached to the polythiourethane resin, thereby improving the stability and reliability of the product without being peeled off from the urethane resin forming the lens. It relates to a method for manufacturing a high refractive index polarizing lens that can be made, and has high industrial applicability.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Health & Medical Sciences (AREA)
  • Ophthalmology & Optometry (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Polarising Elements (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Laminated Bodies (AREA)

Abstract

La présente invention concerne un procédé de fabrication d'une lentille à haute réfraction polarisée, dans lequel l'adhésivité d'un film polarisé à fixer à une résine à base de polythiouréthane est améliorée de telle sorte que le film polarisé n'est pas délaminé à partir de la résine d'uréthane formant une lentille, la stabilité et la fiabilité du produit pouvant être améliorées. Le procédé comprend les étapes consistant à : prétraiter les deux surfaces d'un film TAC ; fixer le film TAC prétraité aux deux côtés d'un film PVA pour préparer un film polarisé prétraité ; mettre en forme le film polarisé prétraité préparé en une forme de lentille ; placer le film polarisé prétraité façonné dans un moule pour produire une lentille ; introduire une résine à base de polythiouréthane dans le moule pour produire une lentille, dans lequel le film polarisé prétraité est logé ; et fixer le moule et refroidir la résine à base de polythiouréthane.
PCT/KR2020/002950 2019-03-12 2020-03-02 Procédé de fabrication de lentille à haute réfraction polarisée Ceased WO2020184881A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN202080011950.8A CN113383254A (zh) 2019-03-12 2020-03-02 高折射偏光透镜的制备方法
JP2021544336A JP7403856B2 (ja) 2019-03-12 2020-03-02 高屈折偏光レンズの製造方法
US17/431,811 US20220155494A1 (en) 2019-03-12 2020-03-02 The manufacturing method of high-refractive polarized lens

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020190028244A KR102246299B1 (ko) 2019-03-12 2019-03-12 고굴절 편광렌즈의 제조방법
KR10-2019-0028244 2019-03-12

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WO2020184881A1 true WO2020184881A1 (fr) 2020-09-17

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PCT/KR2020/002950 Ceased WO2020184881A1 (fr) 2019-03-12 2020-03-02 Procédé de fabrication de lentille à haute réfraction polarisée

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US (1) US20220155494A1 (fr)
JP (1) JP7403856B2 (fr)
KR (1) KR102246299B1 (fr)
CN (1) CN113383254A (fr)
WO (1) WO2020184881A1 (fr)

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